package 栈帧;

public class test {
    public static void main(String[] args) {
        a();
    }

    private static void a() {
        b();
    }

    private static void b() {
        c();
    }

    private static void c() {

    }

    public static int add(int a, int b) {
        int sum;
        sum = a + b;
        return sum;
    }
}
